Electrical Installation
General Wiring
•LG Electronics recommends that all wiring be double insulated with a minimum rating of 90°C (194°F).
•All wiring should use a flexible copper (Cu) conductor.
•The minimum size should be determined by the applicable codes.
•LG Electronics recommends a size no smaller than 12AWG.
Earth Grounding
•All work must be conducted in conformance with all Federal, State, and local codes and standards.
•Grounding works should be performed by an authorized installer for the safety and maintenance of the system in accordance with all national, state and local electrical codes and regulations and standards.
•Specific information on the solar module dimensions and location of grounding holes is provided in “Product Specifications”.
•One M4 stainless steel bolt, one nut, one spring washer two flat washers one cup washer one star washer and 12 AWG Cu wires are recommended per mounting hole.
•Where common grounding hardware (nut, bolts, washers) is used to attach a listed grounding device, the attachment must be made in conformance with the grounding device manufacturer’s instructions.
•There is an earth hole on the edge of the module frame Using this hole an earth conductor and the solar module frame may be recommended to be connected and earthed as the below drawing.
•All screws and nuts shall be tightened to a torque of 4~5 Nm.
•A module with exposed conductive parts is considered to be in compliance with UL 1703 only when is electrically grounded in accordance with the instructions presented below and the requirements of the National Electrical Code.
The installation instructions shall include:
1.Details for wiring shall comply the NEC Article 690.
2.Details for the grounding method of the frame of arrays shall comply with the NEC Article 250.
3.CNL model instruction manuals shall also include a statement that installation shall be in accordance with CSA C22.1, Safety Standard for Electrical Installations, Canadian Electrical Code, Part 1.
Module frame
Bolt
Flat washer
Star washer
Cup washer
Grounding wire
Flat washer
Spring washer
Nut
Mechanical Installation
Module Mounting
•The LG Electronics’ (LGE) Limited Warranty for solar modules is contingent upon modules being mounted in accordance with the requirements described in this section.
•Any module without a frame (laminate) shall not be considered to comply with the requirements of UL 1703 unless the module with hardware that has been tested and evaluated with the module under this standard or by a field inspection certifying that the installed module complies with the requirements of UL 1703.
Site Consideration
LGE solar modules should be mounted in a location that meets the following requirements.
Operating Temperature
•Maximum Operating Temperature: +90°C (194°F)
•Minimum Operating Temperature:
Design Strength
•LGE solar modules are certified to basic loads 50lb/ft2 (about 2400 Pa).
Excluded Operating Environments
•The solar modules from LG Electronics can not be operated in a location where they could come in direct or indirect contact with salt water or ammonia.
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